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  Isolated single umbilical artery: Implications for pregnancy [Eastern J Med]
Eastern J Med. 2020; 25(3): 444-449 | DOI: 10.5505/ejm.2020.13540  

Isolated single umbilical artery: Implications for pregnancy

Mehmet Nafi Sakar1, Süleyman Cemil Oğlak2, SUREYYA SARIDAS DEMIR3, Hüseyin Gültekin4, Bulent Demir5
1Department of Obstetrics and Gynecology, Memorial Diyarbakır Hospital, Diyarbakır, Turkey
2Department of Obstetrics and Gynecology, Health Sciences University, Gazi Yaşargil Training and Research Hospital, Diyarbakır, Turkey
3Department of Perinatology, Dokuz Eylül University Faculty of Medicine, Izmir, Turkey
4Department of Obstetrics and Gynecology, Suleymaniye Maternity Education and Research Hospital, Istanbul, Turkey
5Department of Obstetrics and Gynecology, Çanakkale Onsekiz Mart University Faculty of Medicine, Çanakkale, Turkey

INTRODUCTION: This study aimed to evaluate whether the presence of an isolated single umbilical artery (iSUA) is associated with adverse perinatal outcomes.

METHODS: Material and Methods: Fifty-one patients with iSUA and 54 controls were enrolled in the case-control study. Demographic characteristics and perinatal outcomes were recorded.


RESULTS: All patients had normal umbilical artery (UMA) Doppler findings, and their detailed ultrasound weeks were between 18 and 23 weeks. The birth weights of the babies in the iSUA group were significantly lower than the control group (2898.82±434.56 g vs 3143.70±419.09 g, p=0.004). In the iSUA group, oligohydramnios (7.8% vs 0%), preterm premature rupture of membranes (PPROM) (3.9% vs 0%), preterm delivery (9.8% vs 3.7%), small for gestational age (SGA) (11.8% vs 3.7%) and neonatal intensive care unit (NICU) (2% vs 0%) admission rates were higher than control group, but there was no statistical significance (p>0.05). But the total adverse pregnancy outcomes were observed in 35.3% (18/51) of cases with iSUA is higher than controls 7.4% (4/54) ( p=0.001).
DISCUSSION AND CONCLUSION: In our study, iSUA is found to be associated with low newborn weight. In the iSUA group, oligohydramnios, PPROM, preterm delivery, SGA and NICU admission rates were high, but there was no statistical significance. But the total adverse pregnancy outcomes were higher in the iSUA group. These results indicate that close follow-up is essential to prevent and manage adverse perinatal outcomes in iSUA patients.

Keywords: Pregnancy, isolated single umbilical artery, perinatal outcomes.


Mehmet Nafi Sakar, Süleyman Cemil Oğlak, SUREYYA SARIDAS DEMIR, Hüseyin Gültekin, Bulent Demir. Isolated single umbilical artery: Implications for pregnancy. Eastern J Med. 2020; 25(3): 444-449

Corresponding Author: Süleyman Cemil Oğlak, Türkiye


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